Title:
SOLAR BATTERY CELL, JUNCTION STRUCTURE, AND SOLAR BATTERY CELL FABRICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2012/147352
Kind Code:
A1
Abstract:
Provided are a solar battery cell, and a junction structure therefor, in which in a back contact type solar battery cell a reduction in recombination loss of carriers occurring in a solder connection results in improved power generation efficiency. The solar battery cell is provided with a silicon substrate (112); pairs of finger electrodes (114p) and (114n) formed on a first surface (113) of the silicon substrate and connected respectively to a P-type diffusion layer (117) and an N-type diffusion layer (118); internal passivation layers (115) that insulate between the pairs of finger electrodes; a connection area (102) for externally connecting a cluster section where the finger sections of one group of finger electrodes (114p) cluster together; and, in that connection area, a barrier section (101) formed on the tips of the other finger electrodes (114n) that have a different polarity from the first group of finger electrodes (114p) in the connection area.
Inventors:
KITAURA HIDETOSHI
YOSHIDA MASAKI
YOSHIDA MASAKI
Application Number:
PCT/JP2012/002862
Publication Date:
November 01, 2012
Filing Date:
April 26, 2012
Export Citation:
Assignee:
PANASONIC CORP (JP)
KITAURA HIDETOSHI
YOSHIDA MASAKI
KITAURA HIDETOSHI
YOSHIDA MASAKI
International Classes:
H01L31/068
Domestic Patent References:
| WO2008115309A2 | 2008-09-25 |
Foreign References:
| JP2005191186A | 2005-07-14 | |||
| DE102007003682A1 | 2008-08-07 | |||
| JP2009176782A | 2009-08-06 | |||
| JP2008028366A | 2008-02-07 |
Attorney, Agent or Firm:
TOKKYOGYOMUHOUJIN MATSUDAKOKUSAITOKKYOJIMUSYO (JP)
Patent business corporation Matsuda international patent firm (JP)
Patent business corporation Matsuda international patent firm (JP)
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Claims: